The Palazzo Ducale in Venice was the home of the Venetian Doge (chief magistrate), and converted into a museum in the early 1920s. The facade overlooking the Venetian lagoon is the oldest, while another facade faces the square where St. Mark’s Basilica sits. Two of the pillars are curiously pink. I read somewhere that death sentences are read out on the loggia floor to the crowd below, and marks where the doge will typically stand during such events.
Sounds like a security nightmare if you ask me.